Fn;. 12. ^ Wolf Kiver. Petiole long; blade often only slightly folded, narrow at Ixis 

 and apex (A); serrations coarse and dull, often double (B). 



/'.I/ A'. /.. Ci'jnn. 



Fig. 13. — ■ Yellow Tkan5H.\rent. Blade medium size, rather broad at base and narrow 

 at apex (A), more or less folded (B), more or less waved, and often spiral (C); serra- 

 tions rather fhdl, shallow and <iuite regular (D). 



